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| AS3209-221 | 81343 | SOCIETY OF AUTOMOTIVE ENGINEERS INC |
| AS568-221MIL-R-83248 | 81343 | SOCIETY OF AUTOMOTIVE ENGINEERS INC |
| M83248-1-221 | 81349 | MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M |
| MILR83248 | 81349 | MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M |
| ST3001-221 | 00198 | PRATT & WHITNEY CANADA CORP |